—We hear all the time about DPI, PPI, points and other supposed measurements related to
computer printers, but the question is, Do we know what they mean and how they are related?
—While the usage of these mnemonics tend to blur in advertising,
here are some definitions:
DPI = dots per inch [Printers and Scanners].
PPI = pixels per inch [Monitors].
Points = the measurement of type sizes and spacing
(1 inch = 72 points)
—The higher DPI or PPI numbers should mean better quality (not necessarily). The "contrast ratio"
in monitors is an important factor in perceived viewing quality. The manufacture's quality
standards for printers – whether dot matrix, ink jet, laser or other printer – may have more
to do with the quality of the printed image.
—Suppose you design an ad piece you want printed in fine quality conventional printing (so it does
not have the cheap copier look). You are designing it on your high-end monitor (say, 1900X1280ppi),
what should you do to make it come out right. Setting your "dpi" settings at 300 or 600 dpi will
produce the best final product. Yes, it makes for large files, but after it is printed and
looks "cheesy" no one will boast that they had small files!
—One last thought, if you plan to design more than one or
two items we suggest that you invest in, and learn Quark
Express, it is the industry standard and produces the best
files for the best final printing. At Kjellberg
we pride ourselves in being able to handle most program files.
Some programs produce files that take extra time ($) to make ready
for print. Why not check with us before you start —no obligation!
You can always count on the best possible printing with us, call
now -
630-653-2244.
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Meet Gary Kjellberg
History Question:
Why did Apple render text at 72dpi,
while IBM always used 96dpi?
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